# QRefine vs US単位コンバーター

The clearest difference is in-app purchases: US単位コンバーター at none against QRefine's 3. US単位コンバーター also leads on update cadence (every 3 weeks vs every 8 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. QRefine sells 3 in-app purchases, starting at $1.99 per month. US単位コンバーター asks for nothing beyond the download.

QRefine ships an update every 8 months, US単位コンバーター every 3 weeks. The most recent releases landed on September 19, 2026 and June 20, 2026 respectively.

## The numbers

| Metric | QRefine | US単位コンバーター |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/qrefine-qr-code-scanner/id1210054176/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 38 MB | 41 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [T TECH, LIMITED LIABILITY CO.](https://appshunter.io/developer/1437034061) | [Taiki Saito](https://appshunter.io/developer/995768398) |

## What reviewers say

### QRefine

[App page](https://appshunter.io/ios/app/qrefine-qr-code-scanner/id1210054176)

This utility app allows users to read, generate, and manage both binary and text QR codes with high precision. It supports various QR code formats, including game-specific and enterprise-use types, and offers features for organizing, backing up, and editing code parameters.

**Highlights:** Read QR codes from camera or image, Generate custom text and binary QR codes, High-fidelity regeneration of QR codes, Manage and organize saved QR codes, Backup and restore QR code lists, Edit QR code parameters (error correction, mask pattern)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QRefine Pro Monthly | $1.99 | per month |
| QRefine Pro Yearly | $9.99 | per year |
| QRefine Pro Lifetime | $19.99 | one-time |


### US単位コンバーター

[App page](https://appshunter.io/ios/app/us/id1607728774)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QRefine free?

QRefine is free to download, with in-app purchases available.

### Is US単位コンバーター free?

US単位コンバーター is free to download, with no in-app purchases.

### Do QRefine or US単位コンバーター have ads?

Both QRefine and US単位コンバーター show ads.

### Which is updated more often, QRefine or US単位コンバーター?

QRefine ships an update every 8 months, and US単位コンバーター every 3 weeks. Most recently, QRefine was updated on September 19, 2026 and US単位コンバーター on June 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*